The operation comes at a critical time for the Awá, one of the last nomadic hunter-gatherer tribes in the Brazilian Amazon, who are at risk of extinction if the destruction of their forest is not stopped as a matter of urgency.

But while the operation is making it more difficult for loggers to enter Awá territory and remove the valuable timber, the forces have not moved onto the Awá’s land itself – where illegal logging is taking place at an alarming rate and where quick action is crucial.

Amiri Awá told Survival, ‘The invaders must be made to leave our forest. We don’t want our forest to disappear. The loggers have already destroyed many areas.’

Armored vehicles, helicopters and close to a hundred other vehicles have been deployed to protect the forest.

Tens of thousands of people worldwide, including many celebrities, have joined Survival International’s campaign urging the Brazilian government to send forces into the Awá’s territories to evict the illegal invaders, stop the destruction of the Awá’s forest, prosecute the illegal loggers and prevent them from re-entering the area.

Survival’s Director Stephen Corry said today, ‘Brazil has taken a promising first step towards saving the world’s most threatened tribe, and it’s thanks to the many thousands of Awá supporters worldwide. This is proof that public opinion can effect change. However, the battle is not yet won: the authorities must not stop until all illegal invaders are gone.’